Matthew Chamberlain, MD

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

1018444 Issued in MA

Practice address

321 Main St
Acton, MA 01720-3799

Phone

(978) 635-8700

NPI assigned

Apr 3, 2021

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in MA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir4.healow.com/fhir/r4/FIBBCD
• Direct secure messaging: matthew.chamberlain@amapc1.eclinicaldirectplus.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Acton Medical Associates, PC

  • Internal Medicine Physician
  • Acton, MA
  • NPI 1447365408

  Pediatrics

  Medicare reassignment NPD

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1617408000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1758153600000",
    "number": "1760061279",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "12 TANGLEWOOD DR",
            "city": "CHELMSFORD",
            "state": "MA",
            "postal_code": "018241267",
            "telephone_number": "508-451-0420"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "321 MAIN ST",
            "city": "ACTON",
            "state": "MA",
            "postal_code": "017203799",
            "telephone_number": "978-635-8700"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHAMBERLAIN",
        "first_name": "MATTHEW",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-04-03",
        "last_updated": "2025-09-18",
        "certification_date": "2025-09-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "MA",
            "license": "1018444",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Barbara J Casaceli, R.D., L.D.N
• Michele Cassin, O.D.
• Caitlin R Castellot, NP
• Aleah Castonguay
• Theresa Rose Cerulli-Banks, MD
• Chandler D Charette, DO
• Charles E. Streff
• Courtney Chaulk
• Jennifer Cracknell Chen, MSW
• Jamie Wood Chiarelli, MSW/LICSW

• Pediatrics Physician in Acton, MA
• Providers in Acton, MA by specialty
• Pediatrics Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 18, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.